Make IPC::Channel::Listener:OnMessageReceived have a return value indicating ...

chrome/common/webmessageportchannel_impl.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_COMMON_WEBMESSAGEPORTCHANNEL_IMPL_H_
 #define CHROME_COMMON_WEBMESSAGEPORTCHANNEL_IMPL_H_
 #pragma once
 
 #include <queue>
 #include <vector>
@@ skipping 30 matching lines @@
   virtual void postMessage(const WebKit::WebString& message,
                            WebKit::WebMessagePortChannelArray* channels);
   virtual bool tryGetMessage(WebKit::WebString* message,
                              WebKit::WebMessagePortChannelArray& channels);
 
   void Init();
   void Entangle(scoped_refptr<WebMessagePortChannelImpl> channel);
   void Send(IPC::Message* message);
 
   // IPC::Channel::Listener implementation.
-  virtual void OnMessageReceived(const IPC::Message& message);
+  virtual bool OnMessageReceived(const IPC::Message& message);
 
   void OnMessage(const string16& message,
                  const std::vector<int>& sent_message_port_ids,
                  const std::vector<int>& new_routing_ids);
   void OnMessagedQueued();
 
   struct Message {
     Message();
     ~Message();
 
     string16 message;
     std::vector<WebMessagePortChannelImpl*> ports;
   };
 
   typedef std::queue<Message> MessageQueue;
   MessageQueue message_queue_;
 
   WebKit::WebMessagePortChannelClient* client_;
   Lock lock_;  // Locks access to above.
 
   int route_id_;  // The routing id for this object.
   int message_port_id_;  // A globally unique identifier for this message port.
 
   DISALLOW_COPY_AND_ASSIGN(WebMessagePortChannelImpl);
 };
 
 #endif  // CHROME_COMMON_WEBMESSAGEPORTCHANNEL_IMPL_H_